WO2006076879A1 - Lampe a decharge gazeuse haute pression - Google Patents

Lampe a decharge gazeuse haute pression Download PDF

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Publication number
WO2006076879A1
WO2006076879A1 PCT/DE2006/000004 DE2006000004W WO2006076879A1 WO 2006076879 A1 WO2006076879 A1 WO 2006076879A1 DE 2006000004 W DE2006000004 W DE 2006000004W WO 2006076879 A1 WO2006076879 A1 WO 2006076879A1
Authority
WO
WIPO (PCT)
Prior art keywords
ignition aid
discharge lamp
pressure discharge
discharge vessel
electrodes
Prior art date
Application number
PCT/DE2006/000004
Other languages
German (de)
English (en)
Inventor
Michael Bönigk
Matthias Lau
Original Assignee
Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH filed Critical Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH
Publication of WO2006076879A1 publication Critical patent/WO2006076879A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/54—Igniting arrangements, e.g. promoting ionisation for starting
    • H01J61/547—Igniting arrangements, e.g. promoting ionisation for starting using an auxiliary electrode outside the vessel

Definitions

  • the invention relates to a high-pressure discharge lamp according to the preamble of patent claim 1.
  • Such a high-pressure discharge lamp is disclosed, for example, in WO 97/35335. This publication describes a high-pressure discharge lamp for
  • J a motor vehicle headlight with a sealed discharge vessel, in the interior of which two electrodes for generating a gas discharge are arranged diametrically, and with an annular or semi-annular metallic ignition aid, which is arranged outside the discharge vessel and surrounds the discharge vessel in the region of one of the electrodes.
  • This ignition aid is designed as a starting auxiliary electrode
  • the patent US 6,674,239 Bl describes a high-pressure discharge lamp for a motor vehicle headlight.
  • This high-pressure discharge lamp has a discharge vessel, which is surrounded by an outer bulb fixed on the discharge vessel. On the outer bulb, a Zündisdraht is arranged, which winds helically around the outer bulb.
  • the high-pressure discharge lamp according to the invention has a sealed discharge vessel and two electrodes arranged diametrically within the discharge vessel for generating a gas discharge and a metallic starting aid arranged outside the discharge vessel.
  • this ignition aid has a first and a second section, each of which is arranged in a groove surrounding the discharge vessel in the region of the electrodes, and a third section, by which the first and second sections are connected to one another.
  • the ignition aid of the high-pressure discharge lamp according to the invention offers the advantage over the ignition aid according to US Pat. No. 6,674,239 B1 of lower light shading and higher efficiency, since it is placed closer to the discharge space and the electrodes.
  • the inventive starting aid has the advantage that it does not have to be connected to a power supply.
  • the ignition aid according to the invention requires no electrical connection, can be arranged completely within an outer bulb and does not cause any diffusion of the sodium ions contained in the ionizable filling from the discharge vessel.
  • the ignition aid according to the invention requires no change to the existing construction of the lamp vessels and the base and the operating device.
  • the first and second sections of the metallic starting aid of the high-pressure discharge lamp according to the invention ensure reliable fixing of the starting aid to the discharge vessel, without thereby impairing the assembly of an outer bulb on the ends of the discharge vessel.
  • the third section of the starting aid of the high-pressure discharge lamp according to the invention connects its first and second sections mechanically and electrically to one another. This results in a capacitive coupling between the electrodes and the metallic ignition aid, which at the high frequencies of the ignition pulses, which are applied to the electrodes during the ignition phase, produce a dielectrically impeded discharge.
  • the free charge carriers formed by the abovementioned dielectrically impeded discharge within the discharge vessel enable the electrical breakdown between the two electrodes.
  • the ignition aid of the high-pressure discharge lamp according to the invention consists of manufacturing reasons and in order to minimize light shading preferably made of metal wire and / or sheet metal.
  • all three sections of the ignition aid may be made of metal wire or narrow sheet metal strips that are welded together.
  • the first and second portions of the metal wire ignition aid and the third portion of the ignition aid may be made of a narrow strip of sheet metal.
  • the first and second sections of the starting aid of the high-pressure discharge lamp according to the invention are advantageously designed in the form of an annular or ring segment in order to ensure reliable fixing of the starting aid in the respective slot.
  • the first and second portions of the ignition aid may be of a clip-like or claw-like design to fix the ignition aid in the respective groove with a press fit or in the manner of a snap-fit or latching connection on the outside of the discharge vessel.
  • the ignition aid is advantageously not connected to a voltage source and arranged galvanically separated from the electrodes. As a result, the ignition aid does not cause sodium loss due to diffusion of the sodium ions in the ionizable filling in the discharge space. In addition, this does not make it difficult to mount the outer bulb on the ends of the discharge vessel, since no current feed through one of the lamp vessels for contacting the ignition aid is needed.
  • the invention is advantageously applicable to a high-pressure discharge lamp with a horizontal burning position, in particular to a high-pressure discharge lamp for motor vehicle headlights.
  • the invention is particularly advantageously applicable to mercury-free metal halide high-pressure discharge lamps for motor vehicle headlights.
  • the ignition aid according to the invention contributes significantly to the improvement of the ignition.
  • Figure 1 is a side view of a high pressure discharge lamp according to the first embodiment of the invention in a schematic representation
  • Figure 2 is a side view of a high pressure discharge lamp according to the second embodiment of the invention in a schematic representation
  • inventions are mercury-free metal halide high-pressure discharge lamps with an electrical power consumption of about 35 watts, which are intended for use as a light source in motor vehicle headlights.
  • These lamps have a discharge vessel 1 made of quartz glass, which has a discharge space 10 and two ends 1 1, 12 sealed by means of molybdenum foils 2, 3.
  • the outside of the discharge vessel 1 in each case has an annular groove 13 or 14 surrounding the discharge vessel 1.
  • Two diametrically arranged electrodes 2, 3, which serve to generate a gas discharge in the discharge space 10 and project via one of the molybdenum foils 4 and 5 and one out of the respective sealed ends 11 and 12, respectively, lead into the discharge space 10 7 are each connected to one, the base 8, electrical connection 80 are connected.
  • the discharge vessel 1 is surrounded by an outer bulb 15, which is fused to the sealed ends 11, 12 of the discharge vessel 1.
  • the high-pressure discharge lamp has a metallic starting aid 9, which has two annular sections 91, 92 and a third section 93, which adjoins the outer contour of the discharge vessel 1 and extends over the discharge space 10 in the longitudinal direction of the lamp. which is connected to the two annular portions 91, 92 by a weld.
  • the annular portions 91, 92 are each arranged in a groove 13 and 14 and enclose the discharge vessel 1 in this area.
  • the sections 91 to 93 of the ignition aid 9 consist of metal wires, in particular of a chromium-iron-aluminum alloy with the designation CrFeAl 139. Alternatively, all sections 91 to 93 or individual sections, for example the section 93, the ignition aid 9 also from a narrow metal strips are made.
  • the ignition aid 9 is located in the intermediate space between the discharge vessel 1 and the outer bulb 15. There is a capacitive coupling between the starting aid 9 and the electrodes 2. 3.
  • the high-pressure discharge lamp is aligned horizontally, so that the connection axis of the two electrodes 2, 3 arranged in a horizontal plane and the power supply 6 is returned below the lamp vessel 1, 15 to the base 8.
  • the section 93 of the ignition aid 9 runs in this orientation of the high-pressure discharge lamp below the discharge vessel 1 and is arranged with the current return 6 in a common vertical plane, so that the light shading by the ignition aid 9 and the current return 6 is minimal.
  • the illustrated in Figure 2 second embodiment of the invention differs from the first embodiment described above only by the shape of the ignition aid 9 and 9 '.
  • the high-pressure discharge lamp has a metallic ignition aid 9 ', the two clamp-like or claw-like portions 91', 92 'and a third, the outer contour of the discharge vessel 1 fitting and over the discharge space 10 in Lengthwise of the lamp extending portion 93 ', which is connected to the two clamp-like or claw-like portions 91', 92 'by a weld.
  • the staple-like or claw-like portions 91 ', 92' are each aimeordnet in one of the grooves 13 and 14, respectively, and are fixed with clamping fit or in the manner of a snap or locking connection in this area to the discharge vessel 1.
  • the sections 91 'to 93' of the ignition aid 9 ' consist of metal wires, in particular of a chromium-iron-aluminum alloy with the designation CrFeAl 139.
  • all sections 91' to 93 'or individual sections, for example the section 93', of the ignition aid 9 ' are also made of a narrow sheet metal strip.
  • the ignition aid 9 " is located in the space between the discharge vessel 1 and the outer bulb 15.
  • the high-pressure discharge lamp is aligned horizontally, so that the connecting axis of the two electrodes 2, 3 is arranged in a horizontal plane and the power supply 6 is led back below the lamp vessel 1, 15 to the base 8.
  • the section 93 'of the ignition aid 9' runs in this orientation of the high-pressure discharge lamp below the discharge vessel 1 and is in one with the current return 6 arranged common vertical plane, so that the Lichtabschattung by the ignition aid 9 'and the Stroingur enclosure 6 is minimal.
  • the invention is not limited to the two embodiments explained in more detail above.
  • the ignition aid 9 or 9 1 can also be used for other types of high-pressure discharge lamps, for example those with mercury-containing ionizable filling.

Landscapes

  • Discharge Lamps And Accessories Thereof (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

L'invention concerne une lampe à décharge gazeuse haute pression comportant une cuve à décharge étanche (1) et deux électrodes (2, 3) disposées diamétralement dans la cuve à décharge (1), destinées à produire une décharge gazeuse, et une assistance d'allumage métallique (9) disposée en-dehors de la cuve à décharge (1). L'assistance à l'allumage (9) comporte une première section (91) et une deuxième section (92) disposées dans une rainure (13, 14) entourant la cuve à décharge (1) dans la zone des électrodes (2, 3), ainsi qu'une troisième section (93) connectant la première section (91) et la deuxième section (92).
PCT/DE2006/000004 2005-01-21 2006-01-03 Lampe a decharge gazeuse haute pression WO2006076879A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005003129.3 2005-01-21
DE200510003129 DE102005003129A1 (de) 2005-01-21 2005-01-21 Hochdruckentladungslampe

Publications (1)

Publication Number Publication Date
WO2006076879A1 true WO2006076879A1 (fr) 2006-07-27

Family

ID=36061395

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2006/000004 WO2006076879A1 (fr) 2005-01-21 2006-01-03 Lampe a decharge gazeuse haute pression

Country Status (2)

Country Link
DE (1) DE102005003129A1 (fr)
WO (1) WO2006076879A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007093525A1 (fr) * 2006-02-15 2007-08-23 Osram Gesellschaft mit beschränkter Haftung Lampe à décharge à haute pression
US8227990B2 (en) 2009-09-30 2012-07-24 Osram Ag High pressure discharge lamp with a capacitive starting aid
US8659225B2 (en) 2011-10-18 2014-02-25 General Electric Company High intensity discharge lamp with crown and foil ignition aid
US8766518B2 (en) 2011-07-08 2014-07-01 General Electric Company High intensity discharge lamp with ignition aid
US9013103B2 (en) 2011-08-01 2015-04-21 Osram Gmbh High-pressure discharge lamp having a starting aid

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02199766A (ja) * 1989-01-30 1990-08-08 Ushio Inc ショートアーク放電灯
WO1997035335A1 (fr) * 1996-03-16 1997-09-25 Robert Bosch Gmbh Lampe luminescente a gaz, notamment pour phare de vehicule
US6294870B1 (en) * 1998-03-25 2001-09-25 Toshiba Lighting & Technology Corporation High-pressure discharge lamp, high-pressure discharge lamp apparatus, and light source
US20030127985A1 (en) * 2002-01-09 2003-07-10 Ushiodenki Kabushiki Kaisha Discharge lamp
US6674239B1 (en) * 1999-07-15 2004-01-06 Koninklijke Philips Electronics N.V. Gas discharge lamp
JP2004193061A (ja) * 2002-12-13 2004-07-08 Japan Storage Battery Co Ltd メタルハライドランプ

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02199766A (ja) * 1989-01-30 1990-08-08 Ushio Inc ショートアーク放電灯
WO1997035335A1 (fr) * 1996-03-16 1997-09-25 Robert Bosch Gmbh Lampe luminescente a gaz, notamment pour phare de vehicule
US6294870B1 (en) * 1998-03-25 2001-09-25 Toshiba Lighting & Technology Corporation High-pressure discharge lamp, high-pressure discharge lamp apparatus, and light source
US6674239B1 (en) * 1999-07-15 2004-01-06 Koninklijke Philips Electronics N.V. Gas discharge lamp
US20030127985A1 (en) * 2002-01-09 2003-07-10 Ushiodenki Kabushiki Kaisha Discharge lamp
JP2004193061A (ja) * 2002-12-13 2004-07-08 Japan Storage Battery Co Ltd メタルハライドランプ

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 014, no. 483 (E - 0993) 22 October 1990 (1990-10-22) *
PATENT ABSTRACTS OF JAPAN vol. 2003, no. 12 5 December 2003 (2003-12-05) *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007093525A1 (fr) * 2006-02-15 2007-08-23 Osram Gesellschaft mit beschränkter Haftung Lampe à décharge à haute pression
US8013508B2 (en) 2006-02-15 2011-09-06 Osram Ag High-pressure discharge lamp
US8227990B2 (en) 2009-09-30 2012-07-24 Osram Ag High pressure discharge lamp with a capacitive starting aid
US8766518B2 (en) 2011-07-08 2014-07-01 General Electric Company High intensity discharge lamp with ignition aid
US9013103B2 (en) 2011-08-01 2015-04-21 Osram Gmbh High-pressure discharge lamp having a starting aid
US8659225B2 (en) 2011-10-18 2014-02-25 General Electric Company High intensity discharge lamp with crown and foil ignition aid

Also Published As

Publication number Publication date
DE102005003129A1 (de) 2006-07-27

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